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samba — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2020-10704

A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.

Products
samba
Affected versions
Not specified
Fixed versions
2:4.12.3+dfsg-2
CVEs
CVE-2020-10704
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 12:28 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-10704

core-osv · Original source

Published 6 May 2020, 14:15 UTC

A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.

osv:DEBIAN-CVE-2020-10704

samba

Fixed versions: 2:4.12.3+dfsg-2

samba

Fixed versions: 2:4.12.3+dfsg-2

samba

Fixed versions: 2:4.12.3+dfsg-2

Complete source record
{
  "id": "e038a557f10725f3415952e658756949a5706bfc83853bc827e9ba9798d56768",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-10704",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-10704",
    "summary": "A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.",
    "evidence": "osv:DEBIAN-CVE-2020-10704",
    "products": [
      {
        "name": {
          "value": "samba",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:4.12.3+dfsg-2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "samba",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:4.12.3+dfsg-2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "samba",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:4.12.3+dfsg-2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2020-10704",
      "aliases": [
        "DEBIAN-CVE-2020-10704"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:4.12.3+dfsg-2"
                }
              ]
            }
          ],
          "package": {
            "name": "samba",
            "purl": "pkg:deb/debian/samba?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-10704.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:4.12.3+dfsg-2"
                }
              ]
            }
          ],
          "package": {
            "name": "samba",
            "purl": "pkg:deb/debian/samba?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-10704.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:4.12.3+dfsg-2"
                }
              ]
            }
          ],
          "package": {
            "name": "samba",
            "purl": "pkg:deb/debian/samba?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-10704.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T12:00:16.368669534Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-10704"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-10704"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-10704",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 451047,
  "published_at": "2020-05-06T14:15:10.817+00:00"
}